RFS/RDS Series Data Sheet
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20W SMT DC-DC Converters, 1.5 – 5 V Output
Recommended Reflow Profile (measured at the leads of the converter)
Product
Pre-heat ramp
Pre-heat soaking
Ramp to
reflow
Reflow
Cooling
From
°C
To
°C
Rate
°C/s
From
°C
To
°C
Time
s
Rate
°C
Time
above
liquidus
s
Peak
temp.
°C
Time within
±5 °C of
peak temp
s
Time
to
peak
s
Rate
°C/s
-M6
(Sn-Pb eutectic)
-M6G
(lead-free)
25
25
150
180
2
2
150
180
183
217
90 - 120
90 - 120
2
2
45
45
220 ±5
240 ±5
10
10
180
210
3
3
Worst Case Reflow Parameters Following J-STD-020D (measured in the center, on top side of the converter)
Product
Pre-heat ramp
Pre-heat soaking
Ramp to
reflow
Reflow
Cooling
From
To
Rate
From
To
Max.
time
Rate
Max. time
above
liquidus
Max.
peak
temp.
Max. time Max.
within ±5 °C time to
of peak temp. peak
Rate
°C
°C
°C/s
°C
°C
s
°C
s
°C
s
s
°C/s
-M6
(Sn-Pb eutectic)
-M6G
(lead-free)
25
25
150
180
3
3
100
150
150
200
120
120
3
3
45
45
230
260
10
10
360
480
6
6
Pick & Place Assembly
The product is designed with a large flat area in the
center of the top surface to serve as a pick up point
for automated vacuum pick and place equipment.
The ‘open board’ construction of the unit ensures
that weight is kept to a minimum. However due to the
relatively large size of the component, a large nozzle
(>8 mm, depending on vacuum pressure) is
recommended for picking and placing.
The unit may also be automatically handled using
‘odd-form’ placement equipment, with mechanical
grippers. For this type of equipment the end edges
of the device, which have no leads and also feature
the greatest dimensional accuracy, should be used
as pick-up points.
Recommended Solder Lands
Dimensions in mm [inches]
JM067
BCD.00017 Rev. AA, 18-Oct-2010
Page 17 of 18
www.power-one.com
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